Graphophone-needle.



No. 885,989. PATENTED APR. 28, 1908.

W. FITZPATRIGK. GRAPHOPHONB NEEDLE.

APPLICATION FILED JULYBI, 1907.

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WILLIAM FITZPATRIGK, OF LOWELL, MASSACHUSETTS.

GRAPHOPHONE-NEEDLE To all whom 'iLmay concern: N

Be it known that I, WILLIAM FITZPATRICK, a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Graphophone- Needles, of which the following is a specification.

My invention relates to gra hophone needles, and has for object the pro notion of a needle of superior qualities'so far as durabihty and tone production are concerned.

A further object is to produce a needle of such construction that the resulting tone may be modified according to the way the needle is fixed in the reproducer.

lo theseand other ends which will be obvious to one skilled in the art, myinvention consists of the elements, combinations and arrangements of parts, all as will be hereinafter fully set forth, and succinctly defined in the annexed claims.

In the accompanying drawings, in which I have illustrated various embodiments of the invention: Figure 1 is a perspective of a needle embodying my invention; Fig. 2 is a perspective at right angles of the subject matter of Fig. 1; and Fig. 3 shows in erspective a modified form of the inventlon.

Referring to the numerals on the drawing, 1 indicates in a general way a' phonograph or graphophone needle, having a butt 3,, the latter adapted to be held in the reproducers. Intermediate the point and butt the needle is provided with flattenedv portions 4, 5, and 6 alternating with portions 7, 8 and 9 which have not been flattened. As shown in Figs. 1 and 2, the said flattened portions are in alinement, and the flat nearest the point is madethinner than the others, because at the point, and at the butt the needle is ordinarily most inflexible, while there is usually some resiliency at the middle.

In Fi 3 I have shown a modification, in which ternate flats are at angles to each Specification of Letters Patent.

Application filed July 31, 1907. Serial No. 386,437.

point 2, and a Patented April 28, 1908.

other. flexible, cured in the reproducer so that a particular flat is alined with the line of travel of the point, or at an angle to said line of travel.

By the construction shown in the other figures, if the needle is so held that theflats lie in a plane transverse to the line of travel of the point, there will be greater flexibility in the needle, and the tone will be modified, and free from roughness. If it be desired to produce a loud, strident tone, the needle is arranged so that the flats are in line with the line of travel of the point; the needle is now less flexible in the direction in which the bending tendency occurs, consequently there is rougher vibration.

It is to be understood that I do not limit in self herein to s ecific forms, materials, or relations, other t an those set out in the claims, except such as may be necessary to 1liil'laczitically embody the invention there do- What I claim is 1. A phonograph needle provided with a series of flattened portions arranged at intervals between the point and the butt thereof, one of said flattened portions being thinner than the others.

. 2. A phonograph needle provided with a series of flattened portions arranged at intervals between the point and the butt thereof,

By this construction the needle is the flattened portion nearest the point being thinner than the others.

3. A phonograph needle provided with a series of flattened portions arranged at intervals between the point and the butt thereof, alternate flattened portions being arranged at an angle to each other.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM FITZPATRICK. Witnesses:

JOHN J. DEVINE, JOHN KEARNEY.

no matter whether the needle be se- 

